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Added many functions you can customise to use #1

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386 changes: 291 additions & 95 deletions Simple Calculator using tkinter.py
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Original file line number Diff line number Diff line change
Expand Up @@ -4,100 +4,296 @@
from tkinter import *

# creating a GUI window
window = Tk()

# restricting the user to change the dimensions of the window using 'resizable' method
window.resizable(width=FALSE, height=FALSE)

# setting the title of GUI window from default to 'Simple Calculator using tkinter' using 'title' method
window.title("Simple Calculator using tkinter")

# setting the background color using 'configure' method
window.configure(background = "#000000")

# global declaration of 'expression' variable
expression = ""

# function executed when buttons other than 'equal to' and 'clear' is clicked
def clicked(number):
global expression
expression += number
equation.set(expression)

# function to clear the input field
def clear_input_field():
equation.set("")
global expression
expression = ""

#function to calculate the final expression
def calculate():
global expression

try:

# converting an operand if it starts with 0
final_expression = ""
for i in expression:
if i.isdigit(): final_expression += i
else:operator=i;final_expression += " "
temp = final_expression.split(" ")
expression = str(int(temp[0])) + operator + str(int(temp[1]))

# calculating the answer using 'eval' function and displaying it
result = str(eval(expression))
equation.set(result)
expression = ""

# handling 'ZeroDivisionError' that arises when second operand is zero while dividing
except ZeroDivisionError:
equation.set("∞")

except:
equation.set("Please Enter a Valid Expression")

equation = StringVar()
equation.set("Enter the expression")
input_ = Entry(window, textvariable = equation,bd=0)
input_.grid(row=0, column=0, columnspan=3)

# creating buttons for numbers, operators and clear(C) using 'Button' function
button_1 = Button(window, text = '1', command = lambda: clicked('1'), height = 2, width = 5)
button_2 = Button(window, text = '2', command = lambda: clicked('2'), height = 2, width = 5)
button_3 = Button(window, text = '3', command = lambda: clicked('3'), height = 2, width = 5)
button_4 = Button(window, text = '4', command = lambda: clicked('4'), height = 2, width = 5)
button_5 = Button(window, text = '5', command = lambda: clicked('5'), height = 2, width = 5)
button_6 = Button(window, text = '6', command = lambda: clicked('6'), height = 2, width = 5)
button_7 = Button(window, text = '7', command = lambda: clicked('7'), height = 2, width = 5)
button_8 = Button(window, text = '8', command = lambda: clicked('8'), height = 2, width = 5)
button_9 = Button(window, text = '9', command = lambda: clicked('9'), height = 2, width = 5)
button_0 = Button(window, text = '0', command = lambda: clicked('0'), height = 2, width = 5)
button_sum = Button(window, text = '+', command = lambda: clicked('+'), height = 2, width = 5)
button_sub = Button(window, text = '-', command = lambda: clicked('-'), height = 2, width = 5)
button_mul = Button(window, text = '*', command = lambda: clicked('*'), height = 2, width = 5)
button_div = Button(window, text = '/', command = lambda: clicked('/'), height = 2, width = 5)
button_equal = Button(window, text = '=', command = lambda: calculate(), height = 2, width = 5)
button_clear = Button(window, text = 'C', command = lambda: clear_input_field(), height = 2, width = 5)
button_point = Button(window, text = '.', command = lambda: clicked('.'), height = 2, width = 5)

# displaying the buttons onto the window and placing them using 'grid' method
button_1.grid(row = 1, column = 0)
button_2.grid(row = 1, column = 1)
button_3.grid(row = 1, column = 2)
button_4.grid(row = 2, column = 0)
button_5.grid(row = 2, column = 1)
button_6.grid(row = 2, column = 2)
button_7.grid(row = 3, column = 0)
button_8.grid(row = 3, column = 1)
button_9.grid(row = 3, column = 2)
button_point.grid(row = 4, column = 0)
button_0.grid(row = 4, column = 1)
button_equal.grid(row = 4, column = 2)
button_sum.grid(row = 1, column = 3)
button_sub.grid(row = 2, column = 3)
button_mul.grid(row = 3, column = 3)
button_div.grid(row = 4, column = 3)
button_clear.grid(row =0 , column = 3)

import math


def click(event):
global scvalue
text = event.widget.cget("text")
if text == "=":
if scvalue.get().isdigit():
value = int(scvalue.get())

# elif ((scvalue.get()).count("pow") > 0):


else:
try:
value = eval(screen.get())

except Exception as e:
print(e)
value = "Error"



scvalue.set(value)
screen.update()

elif text == "C":
scvalue.set("")
screen.update()

elif text == "x^2":
if scvalue.get().isdigit():
val = int(scvalue.get())

avi = math.pow(val, 2)
scvalue.set(avi)
screen.update()
else:
try:
value = eval(screen.get())
val=int(value)
except Exception as e:
print(e)
value = "Error"
avi = math.pow(val,2)
scvalue.set(avi)
screen.update()

elif text == "x^3":
if scvalue.get().isdigit():
val = int(scvalue.get())

avi = math.pow(val, 3)
scvalue.set(avi)
screen.update()
else:
try:
value = eval(screen.get())
val = int(value)
except Exception as e:
print(e)
value = "Error"
avi = math.pow(val, 3)
scvalue.set(avi)
screen.update()

elif text == "sqrt":
value = eval(screen.get())
nw = math.sqrt(value)
# print(nw)
scvalue.set(nw)
screen.update()

elif text == "sin":
value = eval(screen.get())
value1 = math.radians(value)
nw = math.sin(value1)
# print(nw)
scvalue.set(nw)
screen.update()

elif text == "cos":
value = eval(screen.get())
value1 = math.radians(value)
nw = math.cos(value1)
# print(nw)
scvalue.set(nw)
screen.update()

elif text == "tan":
value = eval(screen.get())
value1 = math.radians(value)
nw = math.tan(value1)
# print(nw)
scvalue.set(nw)
screen.update()

elif text == "n!":
value = eval(screen.get())
nw = math.factorial(value)
# print(nw)
scvalue.set(nw)
screen.update()

elif text == "pi":
value = scvalue.get()
v = "3.141592653589"
nw= value + v
scvalue.set(nw)
screen.update()


elif text == "cut":
value = scvalue.get()
l = len(value)
nw = value[:l-1]
scvalue.set(nw)
screen.update()

elif text == "log":
value = eval(screen.get())
nw = math.log10(value)
# print(nw)
scvalue.set(nw)
screen.update()

elif text == "exp":
value = eval(screen.get())
nw = math.exp(value)
# print(nw)
scvalue.set(nw)
screen.update()

elif text == "e":
value = scvalue.get()
v = "2.718281"
nw = value + v
scvalue.set(nw)
screen.update()

elif text == "log 2":
value = eval(screen.get())
nw = math.log2(value)
# print(nw)
scvalue.set(nw)
screen.update()

elif text == "round":
value = eval(screen.get())
nw = round(value)
# print(nw)
scvalue.set(nw)
screen.update()

elif text == "isin":
value = eval(screen.get())
nw = math.degrees(math.asin(value))
# print(nw)
scvalue.set(nw)
screen.update()
elif text == "icos":
value = eval(screen.get())
nw = math.degrees(math.acos(value))
# print(nw)
scvalue.set(nw)
screen.update()
elif text == "itan":
value = eval(screen.get())
nw = math.degrees(math.atan(value))
# print(nw)
scvalue.set(nw)
screen.update()
elif text == "deg":
value = eval(screen.get())
nw = math.degrees(value)
# print(nw)
scvalue.set(nw)
screen.update()
elif text == "abs":
value = eval(screen.get())
nw = math.fabs(value)
# print(nw)
scvalue.set(nw)
screen.update()
elif text == "gamma":
value = eval(screen.get())
nw = math.gamma(value)
# print(nw)
scvalue.set(nw)
screen.update()

elif text=="trunc":
value = eval(screen.get())
nw = math.trunc(value)
# print(nw)
scvalue.set(nw)
screen.update()



else:
scvalue.set(scvalue.get() + text)
screen.update()

root = Tk()
root.minsize(450,395)
root.maxsize(450,395)
root.title("avinash's calculator")
root.configure(bg="darkgrey")

# root.wm_iconbitmap("1.ico")

scvalue = StringVar()
scvalue.set("")
screen = Entry(root, textvar=scvalue, font="lucida 13 bold")
screen.pack(fill=X, ipadx=8,ipady=15, pady=10, padx=10)

def button1(a):
b = Button(f, text=""+a, font="lucida 10 bold", height=2,width=8, relief=FLAT, activebackground="darkgrey",bg="lightgrey")
b.pack(side=LEFT, padx=1, pady=1)
b.bind("<Button-1>", click)


def button2(a):
b = Button(f, text=""+a, font="lucida 10 bold", height=2, width=8,fg="black",activebackground="burlywood")
b.pack(side=LEFT, padx=1, pady=1)
b.bind("<Button-1>", click)

f = Frame(root,bg="darkgrey")
button1("exp")
button1("x^2")
button1("sin")
button1("cos")
button1("tan")
button1("rad")
f.pack()

f = Frame(root,bg="darkgrey")
button1("isin")
button1("icos")
button1("itan")
button1("deg")
button1("abs")
button1("gamma")
f.pack()

f = Frame(root,bg="darkgrey")
button1("round")
button1("log")
button1("cut")
button1("C")
button1("%")
button1("+")
f.pack()

f = Frame(root,bg="darkgrey")
button1("log 2")
button1("pi")
button2("9")
button2("8")
button2("7")
button1("-")
f.pack()

f = Frame(root,bg="darkgrey")
button1("e")
button1("n!")
button2("6")
button2("5")
button2("4")
button1("*")
f.pack()

f = Frame(root,bg="darkgrey")
button1("x^3")
button1("sqrt")
button2("3")
button2("2")
button2("1")
button1("/")
f.pack()

f = Frame(root,bg="darkgrey")
button1("trunc")
button1("(")
button1(")")
button2("0")
button1(".")
button1("=")
f.pack()
# to start the GUI window, 'mainloop' method is used
window.mainloop()
root.mainloop()